TOHATSU MD 40B2 Owner's Manual page 85

6. Tighten the propeller nut to speci-
fied torque, and align one of grooves
to propeller shaft hole.
Propeller nut torque:
35 N·m (25 ft·lb, 3.5kgf·m)
7. Install a new split pin into the nut
hole and bend it.
ENOM00087-A
Spark plugs replacement
ENOW00087-0
WARNING
Do not reuse spark plug with damaged
insulation, or sparks can leak through
crack, potentially leading to electric
shock, explosion and/or fire.
Do not touch spark plugs immediately
after stopping engine as they will be hot
and could cause severe burns if touched.
Allow motor to cool down first.
ENOW00929-0
CAUTION
Use only the recommended spark plugs.
Spark plugs which have an different heat
range may cause engine damage.
If the spark plug(s) is fouled, has carbon
b uil d up , or is w orn , i t sh o ul d b e
replaced.
When reusing spark plugs, remove dirt
from the electrodes and adjust spark
gap to specification.
1. Stop the engine.
2. Remove the top cowl.
3. Remove the spark plug caps.
4. Remove the spark plugs by turning it
counter-clockwise, using a 5/8" (16
mm) socket wrench and handle that
is provided in tool bag.
5. Inspect the spark plug. Replace the
spark plug if the electrodes are worn
or if the insulators are cracked or
chipped.
6. Measure the spark plug electrode
ENOF00084-D
gap with a wire type feeler gauge.
T h e g ap sh ould b e 0. 8 - 0.9 mm
(0.031-0.035 inches). If the gap is
different, replace the spark plug with
a new one
Use spark plug with referring specifi-
cation (See page 13)
1
1. Electrode
2. Spark gap (0.8–0.9 mm, 0.031–0.035 in)
7. Install the spark plug by hand and
turn it carefully to avoid cross-
threading.
INSPECTION AND MAINTENANCE
2
85
ENOF00085-0
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